# Engineering Graphics Class 11 Syllabus 2024

The syllabus is divided into three units: (i) Plane Geometry (ii) Solid Geometry (iii) Machine Drawing. Theory paper is of 70 marks.

### Exam Structure

 Unit Marks Unit - I Plane Geometry 10 1 Lines, angles and rectilinear figures 2 Circles, inscribing and circumscribing of circles Unit - II Solid Geometry 30 3 Orthographic projection of points and lines 4 Orthographic projection of regular plane figures 5 Orthographic projection of right regular solids 6 Section of solid Unit - III Machine Drawing 30 7 Orthographic projections of simple machine blocks 8 Isometric projection of laminae (plane figures) Total Marks 70

### I: Plane Geometry

Printing English alphabets (capital and small) and numerals in standard proportions. Unidirectional/aligned system of dimensioning as per SP: 46-2003 (Revised)

Unit 1

Construction of lines, angles, and their divisions. Simple questions based on triangles, square, rhombus, regular polygons-pentagon, and hexagon.

Unit 2

Construction of circles, inscribing and circumscribing of circles in equilateral triangle, square, rhombus, regular polygons-pentagon, and hexagon.

### II. Solid Geometry

Unit 3

Orthographic projection: dimensioning and conventions strictly as per SP 46:2003 (Revised). Orthographic projection of points and lines.

Unit 4

Orthographic projection of regular plane figures - triangle, square, pentagon, hexagon, circle, and semi-circle.

Unit 5

Orthographic projection of right regular solids such as cubes; prisms and pyramids (square, triangular, pentagonal, and hexagonal); cones; cylinders; spheres; hemi-spheres; frustum of pyramids and cone, when they are kept with their axis (a) perpendicular to HP/VP (b) parallel to HP and VP both.

Unit 6

Section of right regular solids such as cubes; prisms and pyramids (square, triangular, pentagonal, and hexagonal); cones; cylinders; spheres, kept with their axis perpendicular to HP/VP, made by a vertical cutting plane.

### III. Machine Drawing

Unit 7

Orthographic projection of simple machine blocks.

Unit 8

Isometric Projection - Construction of isometric scale showing main divisions of 10 mm and smaller divisions of 1 mm each. Isometric projection (drawn to isometric scale) of regular plane figures - triangle, square, pentagon, hexagon, circle, and semi-circle with their surface parallel to HP or VP (keeping one side either parallel or perpendicular to HP/VP).